A psychiatric study of old age: elderly mental patients in mental hospitals.
D000367:Age Factors; D000368:Aged; D003704:Dementia / Q000453:epidemiology* / Q000401:mortality; D005260:Female; D006778:Hospitals, Psychiatric; D006801:Humans; D007564:Japan; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D012737:Sex Factors